K-band 0/180° balanced phase shifter with dc-offset cancellationopen access
- Authors
- Lee, H.L.; Moon, S.-M.; Dong, H.-J.; Lee, M.-Q.; Yu, J.-W.
- Issue Date
- Sep-2013
- Citation
- Electronics Letters, v.49, no.19, pp 1234 - 1235
- Pages
- 2
- Journal Title
- Electronics Letters
- Volume
- 49
- Number
- 19
- Start Page
- 1234
- End Page
- 1235
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/67679
- DOI
- 10.1049/el.2013.1666
- ISSN
- 0013-5194
1350-911X
- Abstract
- K-band 0°/180° phase shifter MMIC based on balanced structure which can be applied to BPSK or QPSK modulator with dc-offset cancellation is presented. The proposed balanced phase shifter consists of four Lange couplers, two quarter-wave transmission lines and four switches for open and short terminations. The proposed structure implemented in GaAs 0.15-μm low noise pHEMT process ensures stable 0/180° phase shift while common-mode signals due to the mismatch in reflections by open and short are fed to the isolation port. The proposed phase shifter is verified by the phase shift of 179 ± 1.5° with the insertion loss of 4.5 ± 0.8 dB from 17.5 to 22.5 GHz. The fabricated phase shifter size is 2.2 × 2.85 mm including test pads. © The Institution of Engineering and Technology 2013.
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Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
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